Convert initialize_icons to function

README.md

@@ -68,7 +68,7 @@ mod icon_names {
 
 fn main() {
     ///...///
-    relm4_icons::initialize_icons!(icon_names::BASE_RESOURCE_PATH, icon_names::APP_ID);
+    relm4_icons::initialize_icons(icon_names::GRESOURCE_PATH, icon_names::APP_ID, Some(icon_names::BASE_RESOURCE_PATH));
 }
 ```
 

build_icons/src/lib.rs

@@ -136,6 +136,10 @@ pub fn bundle_icons<P, I, S>(
             "pub(crate) const BASE_RESOURCE_PATH: &str = \"{}\";",
             base_resource_path.unwrap_or_default()
         )])
+        .chain([format!(
+            "pub(crate) const GRESOURCE_PATH: &str = \"{}\";",
+            format!("{}/{}", out_dir, TARGET_FILE)
+        )])
         .collect();
 
     std::fs::write(Path::new(&out_dir).join(constants_file), constants).unwrap();

src/lib.rs

@@ -19,21 +19,30 @@
 #![allow(clippy::negative_feature_names, clippy::multiple_crate_versions)]
 #![cfg_attr(docsrs, feature(doc_cfg))]
 
-/// Initialized the icons and registers them globally for your application.
-#[macro_export]
-macro_rules! initialize_icons {
-    ($base_resource_path:path, $app_id:path) => {
-        use gtk::{gdk, gio};
+use gtk::{
+    gdk,
+    gio::{resources_register, Resource},
+    glib,
+};
+use std::path::Path;
 
-        gio::resources_register_include!("resources.gresource").unwrap();
+/// Initialized the icons and registers them globally for your application.
+pub fn initialize_icons<P: AsRef<Path>>(
+    gresource_path: P,
+    app_id: &str,
+    base_resource_path: Option<P>,
+) {
+    let gresource_bytes = std::fs::read(gresource_path).unwrap();
+    let bytes = glib::Bytes::from(&gresource_bytes);
+    let resource = Resource::from_data(&bytes).unwrap();
+    resources_register(&resource);
 
-        if $base_resource_path.is_empty() && $app_id.is_empty() {
-            gtk::init().unwrap();
+    gtk::init().unwrap();
 
-            let display = gdk::Display::default().unwrap();
-            let theme = gtk::IconTheme::for_display(&display);
-            theme.add_resource_path("/org/gtkrs/icons/");
-            theme.add_resource_path("/org/gtkrs/icons/scalable/actions/");
-        }
-    };
+    if base_resource_path.is_none() && app_id.is_empty() {
+        let display = gdk::Display::default().unwrap();
+        let theme = gtk::IconTheme::for_display(&display);
+        theme.add_resource_path("/org/gtkrs/icons/");
+        theme.add_resource_path("/org/gtkrs/icons/scalable/actions/");
+    }
 }